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Power amplifier suggestions . . .

Discussion in 'audio' started by Bob Edwards, Mar 26, 2020 at 8:37 PM.

  1. Bob Edwards

    Bob Edwards pfm Member

    All -

    It appears that my Exposure 28 has developed a fault - it creates a crackling sound above about 75-80 dB (measured with the DecibelX app). Not the speakers - I have a Linn Klout that does not do it. I've emailed Tony at Exposure and am waiting to hear back, but I'm a bit worried it won't be cost-effective to repair.

    Hence: what would people suggest for a power amplifier? The system is an Exposure 3010S2 CD - Naim nDAC - Exposure 3010S2 preamp - [power amp] - Monitor Audio Gold GX300 speakers.

    The Klout is . . . OK. The 28 sounds more energetic, livelier, and clearer - the Klout sounds like it extends deeper into the bass. The obvious step is a pair of Exposure 3010S2 monos, but they are unusual on the secondary market.

    Considerations - it should be powerful enough to drive the MAs, it should be from a real company that has been around a while and seems likely to be around for a while in the future, reliable, and ideally an advance music-wise on the 28. I'd like to stay at $2k USD or under.

    Thanks all in advance - I appreciate your thoughts!
     
  2. Arkless Electronics

    Arkless Electronics Trade: Amp design and repairs.

    Should be repairable cheaply enough. I'd offer but I see you're in the colonies....
     
    Bob Edwards and Wilson like this.
  3. Bob Edwards

    Bob Edwards pfm Member

    Most kind! I hope so re repair - it's a good sounding amp that works well in what I have.
     
  4. Vinny

    Vinny pfm Member

    Hopefully repair works out.

    Otherwise, Avondale, assuming that can work out cost-wise for you.
     
  5. Gervais Cote

    Gervais Cote Predator

    If this amplifier is a real double mono with 2 transformers, I would definitely try to repair it at first.
    That kind of serious manufacturer deserve our respect as only a few people make good stuff like this.
    If it normally sound good enough for you, you may have a hard time finding something equivalent at a decent price.
    I’m just about to build an amplifier myself and it will be very similar to this construction.........
     
    Mr Pig and Wilson like this.
  6. Bob Edwards

    Bob Edwards pfm Member

    Yep, it's mostly dual mono - two transformers, boards, etc. Only a single power cable, though. One pair of transistors per channel. It looks very well put together.
     
  7. realysm42

    realysm42 reMember

    If the repair is economical, you could always investigate upgrading a few significant components as well for a nice uptick in sound?

    I doubt the repair will cost so much you’ll find something that economically betters what you have.
     
  8. Bairnstorm

    Bairnstorm pfm Member

    The MA's don't require large amounts of power but thrive on quality. A 40 watt valve amp would drive them.
     
  9. stevec67

    stevec67 pfm Member

    Any competent audio repairer will be able to sort it out. Finding one in Colorado may be hard, but when all this nonsense is over I'm sure you can post it to someone in the USA who can fix it.
     
  10. Wilson

    Wilson SCTV half wit

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